三维氧化石墨烯-Ag/泡沫镍复合材料的制备及其电化学性能  

Synthesis and Electrochemical Performance of 3D Redox Graphene Oxide?Ag/Nickel Foam Composite

作　　者：常建霞 酒红芳[1] 焦红倩 张少梅[1] 武世梅 宋霜[1] 

机构地区：[1]中北大学理学院,山西太原030051

出　　处：《过程工程学报》2016年第2期341-345,共5页The Chinese Journal of Process Engineering

摘　　要：采用改进的Hummer法制备氧化石墨(GO),以干燥浸泡法制备三维氧化石墨烯(r GO)-Ag/泡沫镍(NF)复合材料,对其物相、形貌和组成进行分析,研究了其电化学性能.结果表明,复合材料呈疏松多孔结构,Ag颗粒直径为200 nm,电流密度为5 m A/cm^2时初次比容量为1.59 F/cm^2,循环1000次后为初始容量的70%,循环稳定性良好.Graphite oxide（GO） was prepared by a modified Hummer method, and three-dimensional redox graphene oxide-Ag/nickel foam（r GO-Ag/NF） composite prepared by dry immersion method. Its crystalline phase, morphology and composition were characterized, and electrochemical properties analyzed, such as galvanostatic charge-discharge and cyclic voltammogram. The results showed that r GO-Ag/NF composite had a porous structure in which the diameter of Ag particles was 200 nm. At the current density of 5 m A/cm^2, its specific capacitance was estimated as 1.59 F/cm^2. The composite also had a retention rate of 70% of its initial capacitance after 1 000 cycles, indicating excellent recycling stability.

关 键 词：干燥浸泡法 氧化石墨烯-Ag/泡沫镍复合材料 结构 电化学性能 超级电容器 

分 类 号：TQ152[化学工程—电化学工业]